@misc{10481/74171,
year = {2021},
month = {4},
url = {http://hdl.handle.net/10481/74171},
abstract = {We present the first census of giant molecular clouds (GMCs) complete down to 106M  and within the inner 4 kpc of the nearest
giant elliptical and powerful radio galaxy, Centaurus A. We identified 689 GMCs using CO(1–0) data with 1 arcsec spatial
resolution (∼20 pc) and 2 kms−1 velocity resolution obtained with the Atacama Large Millimeter/submillimeter Array. The
I(CO)-N(H2) conversion factor based on the virial method is XCO = (2 ± 1) × 1020 cm−2(K km s−1)−1 for the entire molecular
disc, consistent with that of the discs of spiral galaxies including the Milky Way, and XCO = (5 ± 2) × 1020 cm−2(K km s−1)−1
for the circumnuclear disc (CND; within a galactocentric radius of 200 pc). We obtained the GMC mass spectrum distribution
and find that the best truncated power-law fit for the whole molecular disc, with index γ   −2.41 ± 0.02 and upper cut-off
mass ∼1.3 × 107M , is also in agreement with that of nearby disc galaxies. A trend is found in the mass spectrum index from
steep to shallow as we move to inner radii. Although the GMCs are in an elliptical galaxy, the general GMC properties in the
molecular disc are as in spiral galaxies. However, in the CND, large offsets in the line-width-size scaling relations (∼0.3 dex
higher than those in the GMCs in the molecular disc), a different XCO factor, and the shallowest GMC mass distribution shape (γ
= −1.1 ± 0.2) all suggest that there the GMCs are most strongly affected by the presence of the active galactic nucleus and/or
shear motions.},
organization = {ALMA Japan Research Grant of NAOJ ALMA Project	NAOJ-ALMA-222	
NAOJ-ALMA-0093},
organization = {Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)
Japan Society for the Promotion of Science},
organization = {Grants-in-Aid for Scientific Research (KAKENHI)	JP 17K14254	
JP 15J04974	
JP17H06130},
organization = {NAOJ ALMA Scientific Research grant	2017-06B},
organization = {Spanish Government	AYA2014-53506-P	
AYA2017-84897-P},
organization = {Junta de Andalucia	FQM108},
organization = {European Commission	SOMM17/6105/UGR},
organization = {Research Coordination Committee, National Astronomical Observatory of Japan (NAOJ), National Institutes ofNatural Sciences (NINS)},
organization = {Ministry of Science and Technology, Taiwan	MOST 107-2119-M-001-020	
2013.1.00803.S},
publisher = {Oxford University Press},
keywords = {ISM: clouds},
keywords = {ISM: molecules},
keywords = {Galaxies: elliptical and lenticular, cD},
keywords = {Galaxies: individual (NGC5128)},
keywords = {Galaxies: ISM},
title = {A giant molecular cloud catalogue in the molecular disc of the elliptical galaxy NGC5128 (Centaurus A)},
doi = {10.1093/mnras/stab1210},
author = {Espada Fernández, Daniel and Verley, Simon},
}